Discs do not actually "slip". Rather, they may herniate or bulge outward. A herniation is a displaced fragment of the center part of the disc.
You may have heard the term "slipped disc" used to describe a low back injury. Discs do not actually "slip." Rather, they may herniate or bulge out from between

Pain that radiates from your lower (lumbar) spine to your buttock and down the back of your leg is the hallmark of sciatica. Occasionally, sciatic pain in men is caused by sitting on a wallet.
The sciatic nerve is the longest nerve in your body. It runs from your pelvis, through your hip area and buttocks